Watch Arcade Fire and Florence Welch Perform “Dog Days Are Over”

During the final London stop of their ongoing tour behind Everything Now, Arcade Fire brought out Florence Welch. They played her Florence and the Machine hit, “Dog Days Are Over.” Afterwards, they introduced Boy George to the stage for Culture Club’s “Karma Chameleon.” Then, they all did “Wake Up” together. Below, see Florence’s tweets about the collab, and scroll down to see video of the performance.